Mulching is one of the best things you can do to promote tree health. It conserves moisture, moderates soil temperature, and reduces weed competition. But should every tree be mulched? Not necessarily—some benefit more than others, and improper mulching can harm trees.
Young and newly planted trees are top candidates for mulching. Their root systems are still developing, so mulch helps retain moisture and protects them from lawn mower damage. Fruit trees also greatly benefit from mulch, as it helps regulate soil temperature and discourages competing weeds that can steal nutrients.
Native trees in naturalized areas may not need much mulching, especially if they’re already surrounded by leaf litter or forest floor debris. However, urban trees—especially those planted in lawns or along sidewalks—often face compacted soil and heat stress. Mulching these trees helps mimic their natural woodland environment, giving their roots a better chance to thrive.
Avoid mulching around shallow-rooted trees like maples and birches with thick layers, as it can lead to root rot or encourage roots to grow into the mulch itself. Also, steer clear of the common mistake known as “volcano mulching,” where mulch is piled high against the tree trunk. This traps moisture and invites decay.
In short, mulch your young, fruit, or urban trees for the biggest benefit. Use 2–4 inches of organic mulch in a donut shape around the base—never touching the trunk—to keep your trees happy and healthy year-round.
Recent Comments